Quality roofing significantly boosts your home’s curb appeal. On the other hand, a surface featuring stains and discoloration has the opposite effect. Several factors can cause the exterior to change colors, so pinpointing the exact issue will help identify the proper measures for addressing it. If you’re unsure what to look for, use the guide below to determine where best to start.

Why Is Your Roof Discolored?

1. Age

Typical roofing shingles can last around 15 to 20 years and consist of asphalt. These pieces are covered in small granules that protect them from weathering, but these coatings wear down over time. As a result of the deterioration, the asphalt comes to the surface, creating black streaks along the roof. In most cases, you’ll need a replacement to address this problem, as it often indicates that the exterior has reached the end of its life span. 

2. Algae

Algae often feed on the limestone found in asphalt shingles. Like aging pieces, they can create visible black streaks along the roof. However, they can also appear as green mossy growth. 

Over time, algae can weaken the shingles and cause leaks. Remove it with the help of an experienced roofing contractor who will pressure wash the exterior on a low setting. If you’re replacing the entire surface, ask about installing materials resistant to algae. 

3. Rust 

Rust stains are common on metal roofing components, from nails to flashing. They occur when iron reacts with oxygen to form iron oxide. Although these parts generally feature protective coatings, they can get scratched or damaged over time. As a result, the exposed surfaces allow oxygen to react easily with the metal. Rust stains can usually be cleaned away with vinegar or oxalic acid, but damaged components should also be replaced to prevent leaks. 

If you’re looking for a roofing company to address discoloration or replace your current roof, contact Earhart Roofing Company in Anchorage, AK. The Platinum Preferred Contractor has an A+ rating from the Better Business Bureau and works with residential and business customers. They offer various quality materials and services to suit every need and preference, from maintaining flat roofing to installing an asphalt shingle surface. Visit the website to explore their offerings, and call (907) 345-5555 for a quote.